Between 1450 and 1750, european voyages of exploration
(a) were designed to break italian and muslim trade monopolies.
(b) were carried out without knowledge of oceanic conditions.
(c) were confined to the atlantic ocean.
(d) opened up trade relations with polynesian islanders.
(e) set up african posts that opened up the interior of the continent to european exploration

part a. there were 250 teenagers surveyed (100% of tenagers = 250)therefore 1 % = 250/100 = 2.5 76% = 1% x 76 = 2.5 x 76 = 190 teenagers of the 250 surveyed liked burgerspart b: jane surveyed 25% (which is equal to 50 teenagers, i.e. a quarter of the teenagers surveyed is 50) to get 100% we simply get 4 quarters, i.e. multiply 50 by 4 = 200 teenagers were surveyed by jane. part c: it is impossible to give an example where a percentage is greater than 100%, since, by definition , percentage means "per 100".